[gmueckl]

What about accessibility? Accessibility helpers would need semantic information about the UI to be of any use. And I doubt that many homegrown or halfbaked Ui libraries (which would certainly sprout like mushrooms on a platform like yours) would provide correct annotations through an accessibility API. Most developers wouldn't care.

[lwansbrough]

Accessibility is definitely something I have thought about, too. Including accessibility features in the API is vital I think. I'm not very familiar with accessibility features as they exist today, but I think it would be possible for longer term projects built on top of such a UI system to emerge which would provide accessibility information by default, and the rest would resemble what we have with HTML today.